Children's picture book set to nurture curiosity. - Title: Why? How? (Sequel) Why? How? - Author: Takahashi Shoten - Price: 850 yen - Price: 900 yen Thank you for viewing. These were bought for my child about 10 years ago. I found them while doing a big cleaning and am now listing them. The child's name was written on the back cover of the first book, so it has been covered with white tape. These have been stored at home for a long time. Thank you for your understanding. I hope you will consider purchasing them.